Lake Lamoure
LaMoure County, North Dakota494 acresView mapDirections
ND DEQ publishes the water-quality measurements for Lake Lamoure. Here is what has been measured.
- 30 ft max depth
- Public access
- Limited data
Lake Lamoure in LaMoure County, North Dakota has water-quality measurements published by ND DEQ, shown here as reported. Water clarity: 8 ft visibility. Chlorophyll-a (algae): 18.4 µg/L. Surface area: 494.1 acres.
Lake Lamoure is a 494-acre lake in LaMoure County, North Dakota with an estimated average depth of about 30 feet. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, NDDEQ, last sampled 2021-10-01. Methodology: how these readings are compared.
Lake Lamoure covers about 490 acres in LaMoure County. It has one public boat landing. If you are planning to stay, you can search lake houses and cabins around Lake Lamoure on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
What Lake Lamoure is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lake Lamoure is safe to swim in today is a call for the North Dakota Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Lamoure
These are the measurements ND DEQ publishes for Lake Lamoure, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8 ft. Chlorophyll-a 18.4 µg/L. TSI 53.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | 18.4µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 53 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Lamoure
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Lake Lamoure typically sits around 56°F at the surface in October. Summer average is about 61°F. Usually warmest in Aug (about 63°F) and coldest in May (about 48°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (48°F) to its warmest (63°F).
Typical surface water temperature by month, from 14 field readings (2019–2021) via the EPA Water Quality Portal. See the full Lake Lamoure water temperature breakdown →
Lake Details
Max depth
~30 ft est.
Surface area
494 acres
Public access
Yes
Listed by ND DEQ
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. North Dakota has not published bathymetry for Lake Lamoure.
Lake Size & Watershed
Watershed (drainage) area
282 sq mi
HydroLAKES / HydroSHEDS
Shoreline
6.7 mi
HydroLAKES / HydroSHEDS
Elevation
1,339 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
- Lake LaMourePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Lake Lamoure
Compare lakeside cabins, hotels, and vacation rentals near Lake Lamoure in LaMoure County, North Dakota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Lake Lamoure
Prices for Oct 23–25, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip? Cabins and lodging at Lake Lamoure → · more North Dakota lake trips
Follow Lake Lamoure’s readings
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Fishing Lake Lamoure
Reservoir Info (USACE NID)
Lake Lamoure is a man-made reservoir impounded by the Cottonwood Creek Dam (completed 1973), built primarily for recreation on the Cottonwood Creek; earth-type dam, 76 ft tall and 1,380 ft long.
- Surface area
- 494.1 ac
- Normal storage
- 8,076 ac-ft
- Max storage
- 16,839 ac-ft
- Drainage area
- 240 sq mi
- Hazard class
- Significant
- Owner
- City of LaMoure
All listed purposes: Recreation;Fish and Wildlife Pond.
Source: USACE National Inventory of Dams, NID ID ND00011 · Operator website
Nearby Lakes in LaMoure County
Frequently asked questions about Lake Lamoure
Where is Lake Lamoure?
- Lake Lamoure is a lake in LaMoure County, North Dakota. Its water-quality measurements are published by ND DEQ and shown on this page as reported.
What is the water quality of Lake Lamoure?
- Lake Lamoure in LaMoure County, North Dakota has water-quality measurements published by ND DEQ, shown here as reported. Water clarity: 8 ft visibility. Chlorophyll-a (algae): 18.4 µg/L. Surface area: 494.1 acres.
Is Lake Lamoure safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Lake Lamoure?
- Lake Lamoure typically sits around 56°F at the surface in October, from 14 EPA Water Quality Portal field readings (2019–2021). That is a typical value for the month, not a live reading.
How deep is Lake Lamoure?
- No published bathymetric survey covers Lake Lamoure, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 30 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 494.1 acres.
Are there boat ramps on Lake Lamoure?
- Lake Lamoure has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake LaMoure. Public access is listed as yes.
Can I fish at Lake Lamoure?
- Lake Lamoure has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by North Dakota's fish and wildlife agency, so check its current regulations before you go.
Explore Lake Lamoure across LakeQuality
Depth, room, public access, and the state wake-sport rules
22.5 mi away · 8 ft
Species activity outlook by water temperature and season
Where to stay at North Dakota's top lakes, each with its readings
North Dakota's cleanest lakes, ranked on agency measurements
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Where this data comes from
8 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North Dakota Department Of Environmental Quality
21NDHDWQ_WQX8 samples · 2021
Analytical methods
- 447.0 ~ EPA; Chlorophyll a and b in phytoplankton by HPLC/UV
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Depth, fish, and access data from North Dakota Game & Fish
Named boat-access points from the USGS National Boat Ramps inventory